Patent GB-600218-A (GB)
Title: Improvements in or relating to interlining materials and method of producing same
IPC: D06M15/51
Filed: 1945-08-28
Abstract: Treatment of cloth for interlining garments comprises impregnation with a composition of an aqueous solution of a heat-curable water-soluble methylated methylol melamine resin and a heat-curable water-insoluble mixture of a phthalic anhydride-polyhydric alcohol resin and a member of the group consisting of organic solvent - soluble urea - formaldehyde resins or organic solvent-soluble melamineformaldehyde resins, followed by the application of heat to cure the said resins on the cloth. Suitable amounts of the resins are 2-20 per cent by weight of the water-soluble resin and 1-25 per cent by weight of the mixture of water-insoluble resins, the said mixture comprising 30-85 per cent phthalic-anhydridepolyhydric alcohol resin and 70-15 per cent organic solvent-soluble urea- (or melamine) formaldehyde resin.  The resins are most satisfactorily applied in the form of an oil-in-water type emulsion in which the water-soluble resin is dissolved in the continuous aqueous phase and the water-insoluble resins form the dispersed phase.  Glue, ammonium caseinate or other water-soluble emulsifying agent may be used to enable the water-insoluble resins to be dispersed.  Small amounts of wetting agents (e.g. sodium dioctyl sulphosuccinate) and curing accelerators (e.g. a mixture of equal parts of di-ammonium hydrogen phosphate and hexamethylene tetramine) may be incorporated.  The treated fabric is useful for interlining lapels and foundation garments and the like.  In an example a butylated urea-formaldehyde resin is blended with a mixture of equal parts of phthalic anhydride-glycerine-cotton seed fatty acid resin and phthalic anhydride-glycerine-castor oil resin by warming to 40 DEG  C. to obtain a homogeneous mixture.  A dilute solution of ammonium caseinate is added slowly to the blended resins at 30 DEG  C. with vigorous agitation until a uniform stable emulsion is formed. To this emulsion there is added a water-soluble methylated methylol melamine resin of 80 per cent resin solids and the agitation continued until solution is complete.  The solution is diluted with warm water, and sodium dioctyl sulphosuccinate and a mixture of equal parts of di-ammonium hydrogen phosphate and hexamethylene tetramine are added. Interlining cloth having a cotton warp and a waft of rayon threads and goat's hair is run through the bath and passed through squeeze rolls set to retain a quantity of the emulsion on the cloth equal to the weight of the cloth.  The treated cloth is run directly into a loop dry box at 110 DEG  C. and cured in an air-lay dry box for 6 minutes at 143-140 DEG  C.  The finished fabric is shrink-proof and crease-resistant yet flexible and resilient.  Preparation of resins used:  (a) Water-soluble methylated methylol melamine is prepared by the action of methanol on dry methylol melamine in the presence of oxalic acid.  (b) Water-insoluble organic solvent-soluble phthalic anhydride-polyhydric alcohol resins are prepared as usual from phthalic anhydride and glycerine and modified with cotton seed fatty acids, castor oil or soya bean fatty acids.  (c) Water-insoluble organic solvent-soluble urea-formaldehyde (or melamine-formaldehyde) resins are prepared by the action of butanol on a mixture of urea (or melamine) and formaldehyde in the presence of a small amount of phosphoric acid.ALSO:Treatment of cloth for interlining garments comprises impregnation with a composition of an aqueous solution of heat-curable water-soluble methylated methylol melamine resin and a heat-curable water-insoluble mixture of a phthalic anhydride-polyhydric alcohol resin and a member of the group consisting of organic solvent-soluble urea-formaldehyde resins or organic solvent-soluble melamine-formaldehyde resins, followed by the application of heat to cure the said resins on the cloth. Suitable amounts of the resins are 2-20 per cent by weight of the water-soluble resin and 1-25 per cent by weight of the mixture of water-insoluble resins, the said mixture comprising 30-85 per cent phthalic - anhydride - polyhydric alcohol resin and 70-15 per cent organic solvent-soluble urea- (or melamine) formaldehyde resin.  The resins are most satisfactorily applied in the form of an oil-in-water type emulsion in which the water-soluble resin is dissolved in the continuous aqueous phase and the water-insoluble resins form the dispersed phase.  Glue, ammonium caseinate or other water-soluble emulsifying agent may be used to enable the water-insoluble resins to be dispersed.  Small amounts of wetting agents (e.g. sodium dioctyl sulphosuccinate) and curing accelerators (e.g. a mixture of equal parts of di - ammonium hydrogen phosphate and hexamethylene tetramine) may be incorporated.  The treated fabric is useful for interlining lapels and foundation garments and the like.  In an example, a butylated urea-formaldehyde resin is blended with a mixture of equal parts of phthalic anhydride-glycerine-cotton seed fatty acid resin and phthalic anhydride-glycerine-castor oil resin by warming to 40 DEG  C. to obtain a homogeneous mixture.  A dilute solution of ammonium caseinate is added slowly to the blended resins at 30 DEG  C. with vigorous agitation until a uniform stable emulsion is formed.  To this emulsion there is added a water-soluble methylated methylol melamine resin of 80 per cent resin solids and the agitation continued until solution is complete.  The solution is diluted with warm water, and sodium dioctyl sulphosuccinate and a mixture of equal parts of di-ammonium hydrogen phosphate and hexamethylene tetramine are added.  Interlining cloth having a cotton warp and a weft of rayon threads and goats' hair is run through the bath and passed through squeeze rolls set to retain a quantity of the emulsion on the cloth equal to the weight of the cloth.  The treated cloth is run directly into a loop dry box at 110 DEG  C. and cured in an air-lay dry box for 6 minutes at 143-149 DEG  C.  The finished fabric is shrink-proof and crease-resistant yet flexible and resilient.  Preparation of resins used.-(a) Water-soluble methylated methylol melamine is prepared by the action of methanol on dry methylol melamine in the presence of oxalic acid.  (b) Water-insoluble organic solvent-soluble phthalic anhydride-polyhydric alcohol resins are prepared as usual from phthalic anhydride and glycerine and modified with cottonseed fatty acids, castor oil or soya bean fatty acids.  (c) Water-insoluble organic solvent-soluble urea-formaldehyde (or melamine-formaldehyde) resins are prepared by the action of butanol on a mixture of urea (or melamine) and formaldehyde in the presence of a small amount of phosphoric acid.